Crushing-mill.



= 66 tltnble roll, and t" UNITED sTATns PATENT onirica HENRY HURTER, FST. LUIS, IMIS5011111.11J .ASSIGNOR TU FULTON IRON WRKS 00Mi- PANY, OFST. LOUIS, MISSDURI, A OORPDRATIONOF DELAWARE.

, RUSHING-MILL.

Spkeeicationnof Letters Patent.

Application filed November 5, 1917.` Serial No. 200,302.

act description, reference being had to thev aecomlnlnymgdrawmgsyforming a part of i this specification..

Mr invention relates to improvements in crus ung mills coiuprisn'ig apair ot cruslv ing rolls, one of which 1s movable toward and away fromthe other, the movable roll being tiltable so as to exert a substantialuniform pressure on an irregular mass of cane, or other material,Ipassing between the rolls. For example, if a relatively large mass ofmaterial is fed between the end por- 'f20 tions of the opposing-rolls,the upper roll will tilt and remain in firm Contact withy the materialnear the opi'iosite ends of the rolls. The pre uit invention is an improvenient on the crushing mill shown in the patent to J l F. (TNeil,1,208,632, Deecmber The main object of this invention ie to generallyimprove the mill shown in the above mentioned patent by simplifying thestructure, renderingit more durable and at the same time enabling thetiltablc elements to -perfori'n their funetioi'is more .Y easily: andmore effectively., The earlier structure includes a tiltabie eruehingroll having journals, bearings Seated on the journals, yielding capeseated on the bean ings and a tiltable scraper connected to said`yielding caps, said V,straper' being fitteifl to the peripl'iery of thetiltable crushing roll.4 40 The object to allow one of the crushing trolls totilt, as previously pointed out, and

to maintain the scraper-.iu para llelism with the axis of the tiltableroll. However, in

i the prior, structure, the bearings-'for the 4&5` tiltable r ll arefirmly guided so they can 'not tilt with the roll, and this is quiteundesirable.` Furthermore, the yielding caps are fitted to fiat upperAfaces ol the bearings,

and theitiltable seraper is (amnceted to these caps. In other words, thetiltable scraper is connected to caps which. cannot tilt with thetiltable roll, andthe latter ie fitted to non-tilting bearings. enablethe bearings toftilt freely with the git the scraper with My objects areto the tiltable bearings, thereby maintaining 'the bearings in 'firmengagement with the Journals of the tlltable roll and also maintainingthe 'scraper in parallelism with the" 'afxis of said rol.

Figure I is a vertical ksection of a crushing mill constructed inaccordance with my invention.

Fig, II is a section on line IIL-II, Fig. I.

lig. III is a fragmentary rear View of theupper portion of themillshowing the side opposite to that illustrated in Fig. I.

Fig. IV is a vfragmen tary section taken approximately 'through thecenter of one. of the side trames.. l

r A designates side frames, each provided with a` pair of guidemembers 1. A lower crushing roll 2 is rotatably mounted between the sideframes. 3 designates a tiltable crushing roll, arranged, above the roll2 and provided with journalsi which flie that the` guide flanges are notclosely lil-ted to the guide members, and'that the bearings. I aretherefore 'free to tilt with the roll Stationary caps G are seated uponthe upper ends of the guide members 1 and rigidly secured thereto bymeans of rods 'i' extending from the guide nielnbers and nuts 8 on theouter ends of said rods. `lach cap is provided with a Huid" refzeivingcham-,y ber E) closed by a plug 10 and having a port ll furthe admissionand disclnirge of Atluid under pressure. llungers 12, mounted in thechau'ibers i.lmi't,i\,l'ii`lv downwardly from the sti'itiollary caps Gand engage the top acesoi the tiltable vbcaringrs B, To allowthebearings to tilt Afreely withL the tiltable roll1 the plunger-s 12are formed with convex bottom faces which engage concave faces on thebearings, as shown in Fig. lV. The fluid maintains the tiltable bearingsB `in firm engagement with the journals' 4L of the tiltable roll.. Theiuid actuated plungers yield to 'allow the crushing roll Byte tilt andmove ,110

raient-.ea s`ept.24,1918.

sov

ul'ufler pressure acting upon the plungers l2 1 toward and away from theother roll, and the bearings B tilt freely with said roll 3.

The crushing rolls are preferably grooved, as shown in Figs. I and III,and they may be rotated byany suitable power mechanism to crush thematerial which passes between them.

' 3. By constructing and arranging the parts in this manner, I provide ascraping device which partakes of the movements of the crushing roll 3when the latteris tilted b v the material to be crushed. The position ofYthe scraper blade 13 with' respect to the axis of the roll' 3, is notchanged when said roll is tilted noil when it moves in a straight linetoward and away from the other roll. Therefore, the scraper is alwayslocated in a. position where it will perform its functions mosteffectively, regardless of the movements of the tiltable roll. 'Themeans for forcingthe scraper .into engagement with the roll 3 comprisesarms 18 secured to the ends of the rod 15, spring holding rods19-passing throughthe lower` endsiof the arms18 and' pivotally supportedat 20. and springs 21 surrounding the rods 19. Each rod 19 is providedwithfa spring seat 22 engaging the lower portion of arm 18, and alsowith a spring seat 23. The springs 21 lie between the spring seats 22and 23 so as .to force the lower ends of arms 18 toward the4 side framesA, thereby forcing the scraper 13 into engagement with the roll 3. Itwill be noted that the springs Q1 are not intended to compel the scraperto follow the tiltable roll, such movements being due to the peculiarmanner in which the scraping device is connected with the bearings B iwhich tilt freely with said tiltable roll.

-I claim:

1. A crushing `mill comprising a pair of coper'ating crushing rolls, oneof which is tiltable', the tiltable roll being movable toward and awayfrom the other roll, journals.

extendingfrom' said tiltable roll, bearings fitted to sald journals,guides to which said bearings are loosely fitted. said bearings be-v ingfree to tilt with said tiltable roll, means for maintaining saidbearings in firm en# gagement with said journals, and a tiltablescraping device fitted to said tiltable roll and connected to saidbearings, thereby providing for said scraper being maintainedv inparallelism with the axis of the tiltable roll when said roll is tilted.

corrugated to conform to the config.

` A crushing mill .comprising a pair nf cooperating crushinsnr rolls,one of which tiltable, the tiltable roll beingmovable toward and awayfrom the other roll. jonrnals extending from saidy tiltabie roll,hearingfitted to said journals, guides to which said bearings areloosely fitted, said hearings heing free to tilt with said tiltableroil. means for maintaining said bearings in firm engage'ment with saidjournals, arms extend-A ing from said bearings, a rod. mounted in saidarms, a scraper secured to said rod and fitted to the peripheryr of,said tiltable roll, thereby providing for said scraper being maintainedin parallelismwith the of the tiltable. roll when said roll is tilted,said. scraper being free to tilt with said bearings, and yielding means-for forcing said scraper into engagementwith said tiltableroll..

3. A' crushing mill comprising a main supportprovided with guides, apair of crushing rolls including a tiltable roll provided with journalswhich lie between said guides, -tiltable bearings fitted to saidjournals and loosely mounted between said guides, caps arranged abovesaid tiltable bearings and rigidly secured to said main support, saidtiltable bearings being arranged between the rigid caps and thejournals, yieldable elements fitted tov the rigid caps and tiltablebearings to maintain the latter in firm en gagement with said journals.and a .tiltable scraping device fitted to said tiltable roll and'connected to said tiltable bearings, thereby providing for .said scraperbeing maintained in parallelism with the axis of the tiltable rollwhen.said roll is tilted.

4. A crushing mill comprising a main support provided with guides, apair of crushing rolls including a tiltable roll provided..with journalswhich lie between said guides, tiltable bearings fitted to said journalsand loosely mounted between said guides, caps arranged above saidtiltable bearings and rigidly secured to said main support, saidtiltable bearings being arranged between the rigid caps and thejournals, each of said caps being provided with a chamber for thereception of fluid under pressure, plungers extending from the chambersin said caps and fitted to said tiltable bearings, the contacting facesof said plungers and bearings being curved to allow the bearings to tiltfreely with said tiltable roll, and a tiltable scraping device fitted.to said tiltableroll and connected to said bearings, thereby providingfor said scraper 'being maintained in parallelism with the axis of rthetiltable roll when said roll is tilted.

FLE-5 port provided with guides, a pair of crush: v

ing vrolls including a tiltable roll provi e"l with journals which liebetweensaid gui tiltable bearings mounted between t guides and fitted tosaid journals, said ti ableimm'ings `lit-,ing clos-et); tittctt tu thuopposing faces of tht. guidvs :intl provided with guide fhmgusnurlntilly salmi-:mut ti'mii thtI guides to allow the bearings to tilt.with tht4 6 tziltablvl roll, matins for maintainim,r said tiltublebearings in fil-iii ungngvmvnt with said journals,V and a tiltnbtcscraping Im'ictfittd to said tiltabic roll und' conm-vtm! to saidhunt-ings, tht-why pim'itling fm' said sm'zipt-l' living nminlaiimitl inpiillnllclism 10 with thtl uxihl nt' thtl t'iltuhh roll wht'n Said rolliS tiltttl.

in testimony that I chiini thc fol'tgoing I iwi-muito nix my signature.

I'I ENR Y Il URTER.

